Calculating-machine.



F. DRINKS.

CALCULATING MACHINE. APPLICATION FILED AUG. 14, 1913.

1,081,172, Patented new, 1913.

, 2 $HBETS-SHBET 1.

F. TRINKS. "CALCULATING MAGHINE. APPLICATION FILED AUG.14. 191s.

Patented Dec. 9, 1913.

2 SHEET S'SHEET 2.

UNITED. STATES PATENT OFFICE.

To all whom it may concern:

Be it known that I, FRANZ THINKS, manu facturer, citizen of the Duchyof Brunswick, Empire of Germany, residing at Brunswick,

ermany, have invented certain new and useful Improvements in Calculating-Machines, of which the following is a speciti cation.

My invention relates to improvements in calculating machines, and more particularly in calculating machines in which setting disks-are provided for operating the registering mechanism, and. in which teeth provided'on the said setting disks are adapted to be shifted into operative positions by cam disks, the numbers of the teeth which are thus shifted corresponding to the values to be transmitted to the registering mechanism. Machines of this type are shown for example in the patents of the United States No. 928,083, granted to me July 13, 1909, No. 953,242, granted to me March 29, 1910, and No. 1,040,059, anted to me October 1, 1912. In machines of this class the cam disks are provided with fingers which project through .slots of the cover of the machine casing. These fingers should not be made too long, because they take part in the revolution of the crank of the machine. Such short finger pieces are inconvenient in operation, and it has therefore been s'uggested to provide special setting levers which for the urpose of setting the setting disks are-coup ed with the cam disks, and which are disconnected from the cam disks while the crank is being operated In this con finger pieces which are located casing may have any desired struction the outside 'the length and suitable form. Constructions of this .kind have been described in the patent of the United States No. 843,506, granted to me February 5, 1907. In constructions of this kind more or less complicated clutch members are necessary, such as are shown for example in the patent of the United States N 0. 979,358, granted to me December 20, 1910. Constructions of this kind are objectionable, because it is impossible to pro vide the same in old machines. Besides some'o'f-the constructions are objectionable, because 5 ecial levers are provided at the sides of t e cam disks, which results in a considerable increase of the. length ;of the setting mechanism; In other constructions the setting mechanism must be shifted in axial direction while the crank is being ro- Specification of Letters Patent. Application fled August 14, 1913.

Patented Dec. 9, 1913. Serial No. 784,777.

tated, in order that the cam disks and the settinglevers which are slidingly mounted on the cover of the casing are disconnected from each other.

The object of the improvements is to provide a mechanism for which permits the use of auxiliary levers of any desired length and convenient form, which is simple in construction, which can be mounted in any old calculating machine in which the cam disks are provided with the ordinary short finger pieces, and which does not necessitate an increase of the length of the setting mechanism nor axial or other movements of the setting mechanism for coupling purposes.

setting the cam disks In my German Patent No. 181,681 of July 18, 1900, a calculating machine is described in which means are provided for rapidly resetting a number which has been removed from the setting mechanism, which means consist in their essential parts of fixed or adjustable stop members adapted to be moved into the path of the finger pieces of the cam disks which upon rotation of the machine crank move in the slots of the cover of the casing, so that the said stop members are engaged by the finger pieces and lock the cam disks during the further rotation of the crank into the position of rest. Thereby the cam disks are set according to the desired number by their movement relatively to the crank. In the said German patent apart from various examples embodying this principle an example is shown in Fig. 6 in which a plate is hinged to the upper margin of the machine, the form of the plate corresponding to the curved form of the cover of the casing. The plate is equipped with parallel slots which are perpendicular to the pivot of the plate and are open at the front end of the plate. Each of the slots is equipped with a slide which provides the aforesaid stop member for the finger piece of the cooperating cam disk. Whtn the hinged p ate is rocked downward its slitsiarein register With the slits of the cover of the casing. Such auxiliary setting devicescan be used for setting the cam disks while the is in inoperative position, for-which purpose the plate is rocked downward on the cover of the casing and the-cam disks are rotated bv shifting the slides away from the axis of the hinge.

My invention consists in providing means being rotated;

of this or other constructions and the driving mechanism of machine, whereby the said auxiliary meclf driism is shifted out of setting position-While the machine crank is For the purpose explaining the invention more in detail several examples emodying the some have shown in the .compenying driewings. in which the some ters of reference have been used. in all the to indicate corresponding ports.

in said. drawings-Figure l, is a. front ViBW ol :1 calculating machine equipped with the auxiliary setting mechanism the said auxiliary setting mechonisur-being shown rocked upward, and the covefof the casing being portly removed, 2, is it cross-sec tion of the machine taken on. the line 22 of 1, 5 are partial front views showing modifications of the auxiliary setting mechanism, and 6, is e cross-section simil to that shown in .cig. 2 and showing er modification.

l tcierring to the example illustrated in Figs. 1 end 2, above the upperrea-r margin of the casing of the machine a shaft 1 is mounted in bearings 16 providing a rocking support "for a covering plate 2 which is curved to correspond to the cover 3 of the casing. in slits at of the cover 2 slides 5 are shifteblysupported which are formed on their lower sides with ribs 6 disposed in the direction of the slits. The slides 5 are adapts ed to locked in position'in the slits by suitable locking means which can readily be loosened. To show what may be done I have shown spring actuated. clutch members 7 setting mechanism 2 which frictionally the plate 2. When shifting the slides 5 the ribs are brought into position for engagement with the finger pieces 8 of the cooperating com disks 9 so as to carry the some along when shifting the slide 5 in the direction of the arrow for setting the cam disk.

Prior to rotating the crank the setting plate 9. which carries the slides 5 must be removed out of the path of the finger pieces 8 to permit free rotation of the letter. However thereby the operation of the machine is made more difficult,- snd. if by mistake the plate. is not the whole calculation would mode erroneous. For this reason invention consists in providing means for automatically removing the auxiliary setting mechanism? from the finger pieces 8 when thc'rotstioii of the machine crank is started. so that the finger pieces are free to take part in the rotation of the crank. 10. eend of the rotation of the crank the is returned into operative position. The mixiliary setting mechanism mow .emoved either by shifting the lot Jilly or rocking the seine upward. l

In the example shown in Figs. 1 and 2 the auxiliary setting mechanism is removed by shifting the'plate 2 laterally which shifting movement 13 imparted to the plate by the axis 11 of the set-ting mechanism. For this purpose the said axis is provided with a disk 12 having a. cam groove '13 formed therein which is engaged by one end of a rocking lever 14 havin its fulcrum at a point intermediate its on s on a pivot 15. The opposite end of the rocking lever bears on the front end of the-shaft l of the plate 2, which shaft is longitudinally shiftable in its bearings 16. Thereby when rotating the cranlrll) the shaft 1 and the plate 2 mounted thereon are shifted to the left during the first part of the rotation, so that;

the stops or ribs 6 are removed out of the paths of the finger pieces 8. At the'end of the rotation of the crank the lever 14 which is positively rocked by the cam disk 12a!- rives agairiin the position shown in Fig; 1, so that a pressure spring 17 can return the shaft 1 with the plate 2 mounted thereon into operative position.

When resetting the machine, which may be done for example by mechanism shownet the lower right part of Fig. 2 and described in detail in the patent of the United States No. 823,375 granted to me April 26, 1906, the slides 5 whichere held merely by their frictional engagement with the platc'2 are returned into their zero positions. Thereby all the slides are reset in the most simple way by turning the shaft QO' by means of the thumb nut 19 and causing the arm's 21.

of the said shaft to engage atthe rear of pins 9 of the cam disks and returning the same into zero position, as is known in the art. The cam disks which are thus being reset return by their finger pieces 8 the slides 5 into their zero positions. While the thumb nut 19 is in inoperative position the arms 21 are disposed at such distances away from the pins 9, that thecam disks can be freely rotated by the machine crank 10.

The means for bringing the slidesS into In Fig. 4 I have shown a further example to which the cam disk 22 for shifting the shaft 1 is formed at its side with a cam face. The lever 14/ and the shaft 1 are connected with each other-in the manner shown in Fig. 3. The spring 24 is a drag spring. The cam face of the disk 22 is in the form of a tooth 22 which rocks the lever 14 only in the inoperative position of the crank 10 so as to hold the plate 2 in operative position. 1

In Fig. 6 I have shown an example in which the plate 2 is adapted .to be rocked upward with its slides away from the finger pieces secured to the cam disks, which may also be done by means of a cam disk. As shown the shaft 1' of the plate 2 is con nected with a crank arm 25 which is jointed to one end of a rocking lever 26. The opposite end of the said lever bears on a disk 28 secured to the driving shaft 11'. If de sired the lever may be provided with an antifriction roller 27. The disk 28 is formed at its circumference with a notch 28 and the end 27 of the lever is adapted to be brought into engagement with the said notch by the weight of the plate 2, soon as the crank of the machine arrives in its zero position.

This position is shown in Fig. 6. As soon as the rotation of the crank isstarted the disk 28 rocks the lever 26 so as to swing the plate upward. Thereby the stop members 6 provided on the slides are ren'ioved out of the paths of the finger pieces 5) of the cam disks.

I claim herein as my invention:

in a calculating machine, the combination with the setting mechanism comprising cam disks which are equipped with projecting finger pieces, and the operating mechanism for the machine, of a member carrying devices located in position for operating said finger pieces, and an operative connection between said operating mechanism and said member arranged to remove the said member with its devices out ofposi'ion for engagement with said finger pieces in testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses. I

FRANZ THINKS.

' Witnesses: Y

VVILnnnn Lemme, JULIUS Sncnnn. 

